Alfred Bester: The Demolished Man & The Stars My Destination
Harlan Ellison: too many to name
Kim Stanley Robinson: Red/Green/Blue Mars series, The Years of Rice and Salt
J. Michael Straczynski: Babylon 5 (actually a tv-series, but considering he created it and wrote 94 of the 110 episodes I think it can be counted)
Gene Wolfe: The Book of the New Sun series
http://en.wikipedia.org/wiki/New_Wav...nce_fiction%29